You might try doing a "faux CTX" rotation modeled after that series which uses 30 minutes of high intensity cardio then follow that with one body part from the Gym Styles (chest, back, bis, tris, shoulders). That makes 5 days. On day 6 do the leg workout timesaver to shorten it to just under an hour. Work abs 2 days a week after the upper body, then on day 7 do a longer stand alone ab workout like Coremax. You can shave a few reps off the body part to keep the total workout one hour if need be on your ab days. I would suggest doing abs on the bis and tris days becuase they are little muscles that won't fatigue you as much and I think the reps are a bit overdone for those body parts anyway. Doing the weight and ab work after the cardio will keep the calorie burn going longer.
Once you've lost weight enough than you can focus on doing the Gym Styles as stand alone to really build up some muscle without doing a lot of cardio. The daily cardio will slow down muscle building efforts a bit, but its important in the beginning to get some "results" that you can at least see to keep you motivated. Like seeing your muscles for a change.
Beth